When did momondo last update prices for flights from Helena Airport to Illinois?

Prices for flights from Helena Airport to Illinois refresh daily.

How old do you have to be to fly from Helena Airport to Illinois?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$210 Cheap Flights from Helena to Illinois in 2026/27

Find the cheapest flights from Helena to Illinois

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:08 pm - 10:05 pmHLN Helena-ORD Chicago O'Hare Intl

7h 57m1 stop Salt Lake City

7:35 am - 12:28 pmORD Chicago O'Hare Intl-HLN Helena

5h 53m1 stop Salt Lake City

$389Delta

Fri, Nov 6 - Sun, Nov 8

1:08 pm - 10:05 pmHLN Helena-ORD Chicago O'Hare Intl

7h 57m1 stop Salt Lake City

7:35 am - 12:28 pmORD Chicago O'Hare Intl-HLN Helena

5h 53m1 stop Salt Lake City

$394Delta

Wed, Oct 28 - Mon, Nov 2

1:08 pm - 11:57 pmHLN Helena-ORD Chicago O'Hare Intl

9h 49m2 stops Salt Lake City Atlanta Hartsfield-Jackson

7:35 am - 12:28 pmORD Chicago O'Hare Intl-HLN Helena

5h 53m1 stop Salt Lake City

$399Delta

Wed, Oct 28 - Mon, Nov 2

2:35 pm - 11:59 pmHLN Helena-ORD Chicago O'Hare Intl

8h 24m1 stop Denver Intl

8:45 am - 1:52 pmORD Chicago O'Hare Intl-HLN Helena

6h 07m1 stop Denver Intl

$418United Airlines

Wed, Dec 2 - Wed, Dec 9

6:28 am - 2:55 pmHLN Helena-ORD Chicago O'Hare Intl

7h 27m1 stop Denver Intl

2:30 pm - 9:31 pmORD Chicago O'Hare Intl-HLN Helena

8h 01m1 stop Denver Intl

$429United Airlines

Tue, Oct 27 - Sat, Oct 31

1:08 pm - 10:05 pmHLN Helena-ORD Chicago O'Hare Intl

7h 57m1 stop Salt Lake City

7:35 am - 12:28 pmORD Chicago O'Hare Intl-HLN Helena

5h 53m1 stop Salt Lake City

$429Delta

Tue, Oct 27 - Sat, Oct 31

1:08 pm - 10:05 pmHLN Helena-ORD Chicago O'Hare Intl

7h 57m1 stop Salt Lake City

1:55 pm - 10:29 pmORD Chicago O'Hare Intl-HLN Helena

9h 34m2 stops Detroit Metropolitan Wayne County Salt Lake City

$434Delta

Tue, Oct 27 - Sat, Oct 31

7:15 am - 4:40 pmHLN Helena-ORD Chicago O'Hare Intl

8h 25m2 stops Salt Lake City Minneapolis St Paul

1:55 pm - 10:29 pmORD Chicago O'Hare Intl-HLN Helena

9h 34m2 stops Detroit Metropolitan Wayne County Salt Lake City

$439Delta

Tue, Oct 27 - Sat, Oct 31

6:15 am - 1:21 pmHLN Helena-ORD Chicago O'Hare Intl

6h 06m1 stop Denver Intl

4:15 pm - 9:32 pmORD Chicago O'Hare Intl-HLN Helena

6h 17m1 stop Denver Intl

$469United Airlines

Sat, Jan 23 - Wed, Jan 27

5:00 pm - 11:59 pmHLN Helena-ORD Chicago O'Hare Intl

29h 59m1 stop Seattle/Tacoma Intl

8:00 am - 4:23 pmORD Chicago O'Hare Intl-HLN Helena

9h 23m1 stop Seattle/Tacoma Intl

$486Alaska Airlines

Sat, Jan 23 - Wed, Jan 27

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Delta flights from Helena to Illinois

Our best Delta deals on Helena to Illinois flight tickets

Delta

Nov 6

HLN1:08 pmHelena

7h 57m

1 stop

ORD10:05 pmChicago O'Hare Intl

Nov 8

ORD7:35 amChicago O'Hare Intl

5h 53m

1 stop

HLN12:28 pmHelena

$389

Delta

Oct 28

HLN1:08 pmHelena

7h 57m

1 stop

ORD10:05 pmChicago O'Hare Intl

Nov 2

ORD7:35 amChicago O'Hare Intl

5h 53m

1 stop

HLN12:28 pmHelena

$394

Delta

Oct 28

HLN1:08 pmHelena

9h 49m

2 stops

ORD11:57 pmChicago O'Hare Intl

Nov 2

ORD7:35 amChicago O'Hare Intl

5h 53m

1 stop

HLN12:28 pmHelena

$399

Alaska Airlines flights from Helena to Illinois

Our best Alaska Airlines deals on Helena to Illinois flight tickets

Alaska Airlines

Jan 23

HLN5:00 pmHelena

29h 59m

1 stop

ORD11:59 pmChicago O'Hare Intl

Jan 27

ORD8:00 amChicago O'Hare Intl

9h 23m

1 stop

HLN4:23 pmHelena

$486

Alaska Airlines

Dec 2

HLN4:49 pmHelena

19h 26m

2 stops

ORD1:15 pmChicago O'Hare Intl

Dec 9

ORD9:00 amChicago O'Hare Intl

8h 12m

1 stop

HLN4:12 pmHelena

$528

Alaska Airlines

Nov 9

HLN4:41 pmHelena

25h 18m

2 stops

ORD6:59 pmChicago O'Hare Intl

Nov 16

ORD6:35 pmChicago O'Hare Intl

22h 29m

1 stop

HLN4:04 pmHelena

$695

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaChicago

HLN Helena - ORD Chicago O'Hare Intl

HLNORD

Helena

Fri 11/6

1:08 pm-10:05 pm

1 stop7h 57m

Chicago O'Hare Intl

Sun 11/8

7:35 am-12:28 pm

1 stop5h 53m

$389

HelenaChicago

HLN Helena - ORD Chicago O'Hare Intl

HLNORD

Helena

Wed 10/28

1:08 pm-10:05 pm

1 stop7h 57m

Chicago O'Hare Intl

Mon 11/2

7:35 am-12:28 pm

1 stop5h 53m

$394

HelenaChicago

HLN Helena - ORD Chicago O'Hare Intl

HLNORD

Helena

Wed 10/28

1:08 pm-11:57 pm

2 stops9h 49m

Chicago O'Hare Intl

Mon 11/2

7:35 am-12:28 pm

1 stop5h 53m

$399

HelenaChicago

HLN Helena - ORD Chicago O'Hare Intl

HLNORD

Helena

Wed 12/2

2:35 pm-11:59 pm

1 stop8h 24m

Chicago O'Hare Intl

Wed 12/9

8:45 am-1:52 pm

1 stop6h 07m

$418

HelenaChicago

HLN Helena - ORD Chicago O'Hare Intl

HLNORD

Helena

Tue 10/27

6:28 am-2:55 pm

1 stop7h 27m

Chicago O'Hare Intl

Sat 10/31

2:30 pm-9:31 pm

1 stop8h 01m

$429

HelenaChicago

HLN Helena - ORD Chicago O'Hare Intl

HLNORD

Helena

Tue 10/27

1:08 pm-10:05 pm

1 stop7h 57m

Chicago O'Hare Intl

Sat 10/31

7:35 am-12:28 pm

1 stop5h 53m

$429

HelenaChicago

HLN Helena - ORD Chicago O'Hare Intl

HLNORD

Helena

Tue 10/27

1:08 pm-10:05 pm

1 stop7h 57m

Chicago O'Hare Intl

Sat 10/31

1:55 pm-10:29 pm

2 stops9h 34m

$434

HelenaChicago

HLN Helena - ORD Chicago O'Hare Intl

HLNORD

Helena

Tue 10/27

7:15 am-4:40 pm

2 stops8h 25m

Chicago O'Hare Intl

Sat 10/31

1:55 pm-10:29 pm

2 stops9h 34m

$439

Quickest round-trip

HelenaChicago

HLN Helena - ORD Chicago O'Hare Intl

HLNORD

Helena

Sat 1/23

6:15 am-1:21 pm

1 stop6h 06m

Chicago O'Hare Intl

Wed 1/27

4:15 pm-9:32 pm

1 stop6h 17m

$469

HelenaChicago

HLN Helena - ORD Chicago O'Hare Intl

HLNORD

Helena

Sat 1/23

5:00 pm-11:59 pm

1 stop29h 59m

Chicago O'Hare Intl

Wed 1/27

8:00 am-4:23 pm

1 stop9h 23m

$486

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Helena to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Helena to Illinois?

Alaska Airlines and United Airlines are the most popular carriers operating from Helena to Illinois

What airlines fly to Illinois?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Illinois from Helena according to our data. United Airlines is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 3 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

Cheap Helena to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to Illinois

Best Price Found	$210
Fastest flight time	5h 32m
Direct flights	None

The best one-way flight to Illinois from Helena in the past 72 hours is $210. The best round-trip flight deal from Helena to Illinois found on momondo in the last 72 hours is $389.

The fastest flight from Helena to Illinois takes 5h 32m

There are no direct flights from Helena to Illinois. There are no popular flight routes from Helena to Illinois.

Search flight deals

Frequently asked questions about flying from Helena to Illinois

When did momondo last update prices for flights from Helena Airport to Illinois?
Prices for flights from Helena Airport to Illinois refresh daily.
How old do you have to be to fly from Helena Airport to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Helena to Illinois?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Helena to Illinois for you.

Can I find flights from Helena to Illinois with flexible booking policies on momondo?

Yes. All flights to Illinois from Helena on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Helena to Illinois?

momondo helps you find the best flight between Helena and Illinois by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Helena to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Helena. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.